New entities mirroring the Project shape:
- knowledge_bases (human code, title, description, created_by, timestamps)
- knowledge_topics (UNIQUE(topic, knowledge_base_id))
- knowledge_categories (self-referential parent; UNIQUE(topic_id, parent, name),
with an app-level check for the NULL-parent case MySQL can't enforce)
- knowledge_facts (category_id NULL → fact lives directly on the topic)
- project_knowledge_bases (M2M project ↔ knowledge base)
Adds full CRUD for KB/topic/category/fact, a nested /tree aggregate,
project link/unlink/list, KB-code generation (same algorithm as project
codes), and category cycle-prevention. Four global permissions
(knowledge-base.create/read/update/delete) seeded in init_bootstrap and
granted to admin/mgr/dev/general-agent/guest as appropriate. New tables
auto-create via Base.metadata.create_all; router wired in main.py.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
hzhang
9feff8e008